org.apache.catalina.core

Class AsyncContextImpl

java.lang.Object

org.apache.catalina.core.AsyncContextImpl

All Implemented Interfaces:

AsyncContext, AsyncContextCallback

public class AsyncContextImpl
extends Object
implements AsyncContext, AsyncContextCallback

Field Summary

Fields

Modifier and Type	Field and Description
protected static StringManager	sm

Fields inherited from interface javax.servlet.AsyncContext

ASYNC_CONTEXT_PATH, ASYNC_MAPPING, ASYNC_PATH_INFO, ASYNC_QUERY_STRING, ASYNC_REQUEST_URI, ASYNC_SERVLET_PATH

Constructor Summary

Constructors

Constructor and Description
AsyncContextImpl(Request request)

Method Summary

Modifier and Type	Method and Description
void	addListener(AsyncListener listener) Adds an event listener that will be called for different AsyncEvents fire
void	addListener(AsyncListener listener, ServletRequest servletRequest, ServletResponse servletResponse) Adds an event listener that will be called when different AsyncEvents fire
void	complete() Completes the async request processing and closes the response stream
<T extends AsyncListener> T	createListener(Class<T> clazz) Creates and returns an AsyncListener object
void	decrementInProgressAsyncCount() Used to notify the Context that async processing has ended.
void	dispatch()
void	dispatch(ServletContext servletContext, String path)
void	dispatch(String path)
protected void	doInternalDispatch()
void	fireOnComplete()
ServletRequest	getRequest()
ServletResponse	getResponse()
long	getTimeout() Get the current timeout.
boolean	hasOriginalRequestAndResponse()
void	incrementInProgressAsyncCount() Used to notify the Context that async processing has started.
boolean	isAvailable() Reports if the web application associated with this async request is available.
boolean	isStarted()
void	recycle()
void	setErrorState(Throwable t, boolean fireOnError)
void	setStarted(Context context, ServletRequest request, ServletResponse response, boolean originalRequestResponse)
void	setTimeout(long timeout) Set the timeout.
void	start(Runnable run) Starts a new thread to process the asynchronous request
boolean	timeout()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

sm

protected static final StringManager sm

Constructor Detail

AsyncContextImpl

public AsyncContextImpl(Request request)

Method Detail

complete

public void complete()

Description copied from interface: javax.servlet.AsyncContext

Completes the async request processing and closes the response stream

Specified by:

complete in interface AsyncContext

fireOnComplete

public void fireOnComplete()

Specified by:

fireOnComplete in interface AsyncContextCallback

timeout

public boolean timeout()

dispatch

public void dispatch()

Specified by:

dispatch in interface AsyncContext

dispatch

public void dispatch(String path)

Specified by:

dispatch in interface AsyncContext

Parameters:

path - The path to which the request/response should be dispatched relative to the ServletContext from which this async request was started.

dispatch

public void dispatch(ServletContext servletContext,
                     String path)

Specified by:

dispatch in interface AsyncContext

Parameters:

servletContext - The ServletContext to which the request/response should be dispatched.

path - The path to which the request/response should be dispatched relative to the specified ServletContext.

getRequest

public ServletRequest getRequest()

Specified by:

getRequest in interface AsyncContext

getResponse

public ServletResponse getResponse()

Specified by:

getResponse in interface AsyncContext

start

public void start(Runnable run)

Description copied from interface: javax.servlet.AsyncContext

Starts a new thread to process the asynchronous request

Specified by:

start in interface AsyncContext

Parameters:

run - a Runnable that the new thread will run

addListener

public void addListener(AsyncListener listener)

Description copied from interface: javax.servlet.AsyncContext

Adds an event listener that will be called for different AsyncEvents fire

Specified by:

addListener in interface AsyncContext

Parameters:

listener - an AsyncListener that will be called with AsyncEvent objects

addListener

public void addListener(AsyncListener listener,
                        ServletRequest servletRequest,
                        ServletResponse servletResponse)

Description copied from interface: javax.servlet.AsyncContext

Adds an event listener that will be called when different AsyncEvents fire

Specified by:

addListener in interface AsyncContext

Parameters:

listener - an AsyncListener that will be called with AsyncEvent objects

servletRequest - the ServletRequest that will be passed with the AsyncEvent

servletResponse - the ServletResponse that will be passed with the AsyncEvent

createListener

public <T extends AsyncListener> T createListener(Class<T> clazz)
                                           throws ServletException

Description copied from interface: javax.servlet.AsyncContext

Creates and returns an AsyncListener object

Specified by:

createListener in interface AsyncContext

Type Parameters:

T - The type to create that extends AsyncListener

Parameters:

clazz - The class to instantiate to create the listener

Returns:

the newly created AsyncListener object

Throws:

ServletException - if the listener cannot be created

recycle

public void recycle()

isStarted

public boolean isStarted()

setStarted

public void setStarted(Context context,
                       ServletRequest request,
                       ServletResponse response,
                       boolean originalRequestResponse)

hasOriginalRequestAndResponse

public boolean hasOriginalRequestAndResponse()

Specified by:

hasOriginalRequestAndResponse in interface AsyncContext

doInternalDispatch

protected void doInternalDispatch()
                           throws ServletException,
                                  IOException

Throws:

ServletException

IOException

getTimeout

public long getTimeout()

Description copied from interface: javax.servlet.AsyncContext

Get the current timeout.

Specified by:

getTimeout in interface AsyncContext

Returns:

The timeout in milliseconds. 0 or less indicates no timeout.

setTimeout

public void setTimeout(long timeout)

Description copied from interface: javax.servlet.AsyncContext

Set the timeout.

Specified by:

setTimeout in interface AsyncContext

Parameters:

timeout - The timeout in milliseconds. 0 or less indicates no timeout.

isAvailable

public boolean isAvailable()

Description copied from interface: AsyncContextCallback

Reports if the web application associated with this async request is available.

Specified by:

isAvailable in interface AsyncContextCallback

Returns:

true if the associated web application is available, otherwise false

setErrorState

public void setErrorState(Throwable t,
                          boolean fireOnError)

incrementInProgressAsyncCount

public void incrementInProgressAsyncCount()

Description copied from interface: AsyncContextCallback

Used to notify the Context that async processing has started. Specifically, for the counting of in-progress async requests to work correctly, this must be called exactly once every time the AsyncStateMachine transitions from DISPATCHED to any other state.

Specified by:

incrementInProgressAsyncCount in interface AsyncContextCallback

decrementInProgressAsyncCount

public void decrementInProgressAsyncCount()

Description copied from interface: AsyncContextCallback

Used to notify the Context that async processing has ended. Specifically, for the counting of in-progress async requests to work correctly, this must be called exactly once every time the AsyncStateMachine transitions to DISPATCHED from any other state.

Specified by:

decrementInProgressAsyncCount in interface AsyncContextCallback